<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
</html>
<script>

    class Ran{

        constructor(name,age){
            this.name = name;
            this.age = age ;
        }

        say(){
            console.log(this.name);
        }
    }

    let ran = new Ran('小李',20)
    console.log(ran);
    ran.say()
</script>